Preheat the oven to 350°F (180ºC).
In a bowl, mix the parsley, cilantro, dried thyme, minced garlic, softened butter, salt, and pepper until well combined.
¼ cup parsley, ¼ cup cilantro, 1 tablespoon dried thyme, 2 tablespoons garlic, ½ cup butter, Salt and pepper
Rinse the turkey thoroughly and pat it dry with paper towels. Remove any insides and stuff the cavity with chunks of green apple. Tie the legs together with kitchen twine to help the turkey cook evenly.
8 pounds turkey, 2 green apples
Rub the herb butter generously all over the turkey, making sure to get under the skin and into every crevice for maximum flavor.
Place the turkey in a large roasting pan, breast-side up. Pour the chicken stock and white wine into the bottom of the pan to keep the turkey moist during cooking. Cover the turkey loosely with baking paper to prevent the skin from browning too quickly.
2 cups chicken stock, 2 cups white wine
Bake the turkey for 3-4 hours, basting it every 30-40 minutes with the pan juices to keep it juicy. The turkey is done when a thermometer reads 165°F in the breast and 170°F in the thighs, or when the juices run clear after piercing the breast.
Once cooked, remove from the oven. Strain the pan juices into a small pot, discarding any solids. Dissolve the cornstarch in a little water to form a slurry, then whisk it into the strained juices. Heat the mixture over medium heat, stirring constantly, until the gravy thickens to your desired consistency.
4 tablespoons cornstarch
Let the turkey rest for 20-30 minutes before carving. Slice the turkey into portions, arrange it on a platter, and serve warm with the gravy.